Provide an example of a scenario that uses the following types of variables: 1 independent variable (IV) and 1 dependent variable (DV) 2 independent variables and 1 dependent variable Note that IVs and DVs do not mean nominal, ordinal, or scale variables. Part 2 When comparing two groups of subjects in a study, there are two kinds of variance (between groups and within groups). What does each represent? Be sure to discuss this answer in terms of variance and not research design. Part 3 An executive is looking at the job performance resulting from two different manufacturing processes and finds that the mean performance of process A is 83.2 and the mean performance of process B is 80.5. Why can the executive not automatically assume that process A will consistently outperform process B? Use what you know about the two kinds of variance from the preceding part to explain your answer to this